Acetylene-gas generator.



No. 829,284. PATENTED AUG. 21,190 J. w. NUNN & T. D. GRIFFIN.

AGBTYLENE GAS GENERATOR APPLICATION FILED MAY 19, 1905.

WIT/VESSE nvmszvrozes M% B GI 7?/ YHE NORRIS PE1ERS co., WASHINGTON, n.c.

UNITED STATES PATENT OFFICE.

JOHN W. NUNN AND THOMAS D. GRIFFIN, OF GRANGER, TEXAS.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed May 18,1905- Serial No. 260,998.

To all whom it ntcty concern:

Be it known that we, JOHN W. NUNN and THOMAS D. GRIFFIN, both citizensof the United States, residing at Granger, in the county of Williamsonand State of Texas, have invented a new and useful Acetylene- GasMachine, of which the following is a specification.

Our invention relates to acetylene-gas 'enerators, and has for itsobject to provi e a device of this kind in which the carbid isautomatically fed to the generator by pressure of the gas under themovable bell and in which the gas generated is washed within the bell,thus avoiding the necessity of interposing the washer between thegenerator and the receiver.

The invention also consists of the novel features of constructionhereinafter fully described, pointed out in the claim, and shown in theaccompanying drawing. I

In the drawing we have shown a vertical section through the generator,carbid-holder, receiver, and bell, the movable parts and pipes beingshown in elevation with the portions broken away to more clearlydisclose the construction.

In the drawing, A represents the generator; B, the receiver O, themovable bell, and D the carbid-holder. The carbid-holder D is mountedupon the top of the generator A and communicates therewith through acontracted neck D. A pipe E is secured in the top of the carbid-holder Dand extends downwardly through the neck D into the generator A, the pipebeing open at each end. A rod E extends through and works in the saidpipe and at its lower end is provided with lateral fingers E. A lever Fis pivoted between its ends upon a standard G, and to one end of thelever F is pivoted the upper end of the rod E. A tube H slides upon thepipe E and carries a conical-shaped flange H, which forms a valve and isnormally seated in the contracted neck portion B, securely closing thesame and preventing the carbid from passing from the holder D into thegenerator A. A safety-gage pipe J is arranged parallel to the generatorA and has an elbow fixed upon its lower end, from which a shortpipesection J extends into the generator A. The

pipe J is opened at each end and serves both as a water-gage, from whichthe height of the water in the generator A may be determined, and-alsoserves as a vent should the generator becoine overcharged with gas. Thepipe-section J also serves as an outlet through which the water into thegenerator and the carbid mud'can be drawn off, it being only neces saryto uncouple the pipe J. A pipe J 2 also extends through the top of thegenerator A to the point adjacent the bottom of the gen erator and isprovided at its upper end with a funnel J This pipe also serves as asafetyvent, being opened at each end, and the funnel J 3 provides aconvenient means for supplying the generator A with water. The pipe Kleads from the upper portion of the generator A downwardly and passesthrough the sides of the generator A and of the receiver B, Where itslower end is secured in a suitable block L. WVithin the receiver B thepipe K is connected by a T-coupling to a gooseneck pipe K, the neck orbow portion of which is above the normal water-level and within the bellO, the discharge end of the pipe K being below the normal level of thewater. The pipe K is steadied at its upper end by means of a T-couplingK which coupling is also threaded upon the lower end of the standard G,which lower end projects into the generator A. Between the generator andthe receiver a suitable valve K is placed in the pipe K. A guide-rod Lis placed vertically within the receiver and bell, the lower end of theguide-rod being fitted into the block L. A suitable tube L passesthrough the top of the bell and slides upon the guide-rod L, and a chainF connects the tube L with the end of the lever F opposite the end towhich the rod E is pivoted. The gas generated within the bell isconveyed to the place of use through a vertical pipe M, the upper end ofthe pipe opening within the bell above the water-level and the lower endbeing connected, by means of a suitable coupling, to a service-pipe M,whoseinner end is threaded into the block L. The plug D closes anopening in the top of the carbidholdfr D, through which the carbid issupplie The operation of the device will be readily understood, and itwill be obvious that as the gas generated within the bell lifts the samevertically the rod E and fingers IE will be permitted to descend withinthe generator and will be out of engagement with the lower end of thetube H; but when the gas within the bell has been drawn oil through thepipes M and M the bell will fall, carrying with it the tube L anddrawing down the end of the lever F, to which the chain F is attached.

This will lift the rod E and the fingers E and the latter coming intoengagement with the lower end of the tube H Will lift the said tube, andthus raise the valve H out of engagement with the contracted neckportion D and permit the carbid to fall by gravity into the generatoruntil a suflicient amount of gas has passed into the receiver and bellto again lift the latter.

Having thus fully described our invention, what we claim as new, anddesire to secure by Letters Patent, is

In a device of the kind described a generator, a carbid-holder carriedthereby and hav ing a contracted neck portion, a tube having a flangeadapted to fit in said neck portion, a rod passing loosely through thetube and having fingers at its lower end adapted to engage the lower endof the tube, and means for lifting said rod vertically upon exhaustionof 20 a gas-supply.

- JOHN W. NUNN.

THOMAS D. GRIFFIN. Witnesses: G. F. WILOOX, Jr., 2

WV. WV. JAMES.

